Sound Reflection

What is the temperature T° C when the velocity of sound at T₂K is twice that at T₁K?

• 819°C

• 400°C

• 273°C

• 100°C

What is the phenomenon called when sound waves bounce back into the first medium?

• Absorption

• Diffraction

• Refraction

• Reflection

What are the waves that strike the interface called?

• Refracted waves

• Transmitted waves

• Incident waves

• Reflected waves

What is the angle of incidence equal to?

• Angle of refraction

• Angle of reflection

• Angle of diffraction

• Angle of transmission

In the laws of reflection, which of the following is true?

• Normal is not defined

• Incident wave and reflected wave are in different planes

• Reflected wave is always greater than incident wave

• Incident wave and normal lie in the same plane

What is the normal in the context of sound reflection?

• The angle of reflection

• The angle of incidence

• A perpendicular line at the point of incidence

• A type of sound wave

What happens to sound waves when they strike the surface of another medium?

• They are reflected

• They are absorbed

• They are transmitted

• They disappear

What is the temperature T₁ in Kelvin?

• 400 K

• 100 K

• 273 K

• 0 K

What is the relationship between the incident wave and the reflected wave?

• They are always equal

• They are in the same plane

• They are unrelated

• They travel in opposite directions

What is the angle of reflection denoted as?

• i

• i'

• r'

• r